BK7 Glass Wafers all diameters and dimensions

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Bookie7 situs slot server thailand super gacor terpercaya Sudah dipercaya sejak 2005, server judi online terbesar dan terpercaya  BK7 is a standard glass for all kinds of optics The SCHOTT glass is nearly bubble free, has an excellent clarity, and a very low amount of inclusions

BK7 wafers are excellent for optical chromatic lens BK7 produces pristine color at all wavelengths with superior purity & superior optical performance  BK7 is a standard glass for all kinds of optics The SCHOTT glass is nearly bubble free, has an excellent clarity, and a very low amount of inclusions